Game Style:
3D Platform

Platform:
Windows Longhorn
XBox 2
(With XNA, it will make cross-platform gaming between Longhorn and Xbox 2 perfect)
Nintendo DS (Need a handheld version )

Time period:
Sequel. Takes place after Jazz Jackrabbit 2

Graphics type:
Cell-shading. Graphics are designed to look like a 3D comic book.

Multiplayer Gametypes:
Free For All (Battle)
Team Free For All (Team Battle)
Capture The Flag (Capture)
Treasure Hunt (Treasure)
Team Objective (Assault)
+ More unique ones.

Other companies involved:
Microsoft Game Studios (Bungie + Rare )


Cinematic scenes:
Game should be lightly story based.
(Action with a bit of story at least)

Thats my view.


Oh and Conker, Microsoft will let you use Xbox for online play without live, they did with PSO on Xbox.
But with Longhorn, you can go on Xbox Live thanks to XNA. (Look it up :P - http://www.microsoft.com/xna/)